One thing I noticed is that when I change to a channel the text flickers a lot for about half a second, as if the text is being formatted/parsed/whatever multiple times.
That tells me you have some sort of driver problem, your graphic card or something like that, or it can be your mouse that trigger the problem, you need to check all your hardware and make sure you have the latest drivers to them, you have been installing drivers for windows xp 64 bits?
